Finding the True File Location of an Executing .NET DLL

Filed under .NET, VB Feng Shui

image Say you’ve written a .NET DLL and you need to know from what folder that DLL was loaded (so you can find resources, config files, whatever).

There are any number of ways to skin that cat, but unfortunately, most won’t work in the general case, but only under certain special circumstances.

Matthew Rowan does a really good job of explaining the differences here, so I’m not going to repeat his post, but the short version of the story is, it takes code that looks like this:

Dim assemblyUri As Uri = New Uri(System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase))
Return assemblyUri.LocalPath

Note that this is the VB version of Matthew’s clip. There a a number of other methods, but they all seem to return bogus results under various conditions.

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